> The maximum cap sounds just stupid.

Conceptually unions are a democracy and people are selfish. Why should I let some other worker make 10x what I do when I can instead have them make 1x and spread out the other 9x around including to me?

This "spread it around" sounds like some trickle down ecodomics madness to me =)

If the company can't pay more to a high performer they surely won't just give thast money to the average folks. It'll just go to C-staff bonuses and conference trips to exotic countries.

(Provided that the average performers are above the union minimum already)